The MapScaping Podcast - GIS, Geospatial, Remote Sensing, earth observation and digital geography cover image

H3 geospatial indexing system

The MapScaping Podcast - GIS, Geospatial, Remote Sensing, earth observation and digital geography

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How H3 Compares to a Normal Sort of Radius Lookup

H3 is able to take advantage of the spatial index and property finding nearby cells. We're able to generate, let's say, all the cells that are within a two grid distance from you,. And then we can do the lookups on those. This does increase the complexity a little bit more because we need to look up these different cells that are near you. But if we wanted to do a neighbourhood lookup, we might have to scan a large number of different points and compute their distance from where I am now to where those points are. These rims approximate a circle as best we're able to.

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